This was a live edit from Darby of the Photonz playing one of their earlier shows at Chuck E. Cheese. I'm not sure about the year on this. This was a birthday party, and there is a spankin' good time! ( 1 reviews ) Topics: GTV, Darby, Photons, Live, Bluegrass, Rock, Party
One mission of the Paul M. Fitts Human Engineering Division of Armstrong Laboratory is to improve the user interface for complex systems through user-centered exploratory development and research activities. In support of this goal, many current projects attempt to advance and exploit user-interface concepts made possible by virtual reality (VR) technologies. Virtual environments may be used as a general purpose interface medium, an alternative display/control method, a data visualization and... Topics: PHOTONS, NORMAL DENSITY FUNCTIONS, NONLINEARITY, CAVITIES
Analytical and experimental studies were performed to investigate the effect of rim thickness on gear tooth crack propagation. The goal was to determine whether cracks grew through gear teeth (benign failure mode) or through gear rims (catastrophic failure mode) for various rim thicknesses. Gear tooth crack propagation was simulated using a finite element based computer program. Principles of linear elastic fracture mechanics were used. Quarter-point, triangular elements were used at the crack... Topics: PHOTONS, ELECTROMAGNETIC FIELDS, VACUUM, CAVITIES, NONLINEARITY
byKetsdever, Andrew D.; Weaver, David P.; Muntz, E. P
Because of the continuing commitment to activity in low-Earth orbit (LEO), a facility is under development to produce energetic atmospheric species, particularly atomic oxygen, with energies ranging from 5 to 80 eV. This relatively high flux facility incorporates an ion engine to produce the corresponding specie ion which is charge exchanged to produce a neutral atomic beam. Ion fluxes of around 10(exp 15) sec(exp -1) with energies of 20-70 eV have been achieved. A geometrically augmented... Topics: PHOTONS, QUANTUM MECHANICS, BEAM SPLITTERS, INTERFERENCE, INTERFEROMETRY, PARADOXES
In many movements of the upper limb such as reaching, positioning, and displacing the objects, the hand moves smoothly along a uni-directional planar trajectory with a bell-shaped speed profile. Because of variability of the load, gravitational and velocity interaction forces between its segments, the dynamics of the arm during the motion is very complex. Motion of the upper arm and the forearm are coordinated to produce smooth movements despite such complex dynamics. This coordination... Topics: MATHEMATICAL MODELS, PHOTOMETERS, QUANTUM THEORY, PHOTONS, PROBABILITY THEORY
A space vehicle thermal heat rejection system 10 utilizing separate optimized heat pipe components for the functions of heat acquisition, heat transport, and heat rejection. A honeycomb panel heat pipe evaporator section 20 performs the function of heat acquisition, and forms a closed thermodynamic system with a dual channel heat pipe transport section 30, which performs the function of heat transport. A plurality of truss or channel core heat pipe rejection fins 41 form the condenser section... Topics: HIGH SPEED CAMERAS, IMAGING TECHNIQUES, NUCLEAR MEDICINE, PHOTONS, PATENTS
byPoteet, Carl C.; Abu-Khajeel, Hasan; Hsu, Su-Yue
The purpose of this research was to perform sensitivity studies and develop a process to perform thermal and structural analysis and sizing of the latest Metallic Thermal Protection System (TPS) developed at NASA LaRC (Langley Research Center). Metallic TPS is a key technology for reducing the cost of reusable launch vehicles (RLV), offering the combination of increased durability and competitive weights when compared to other systems. Accurate sizing of metallic TPS requires combined thermal... Topics: LASER APPLICATIONS, CONTINUOUS WAVE LASERS, PHOTONS, TARGETS, YAG LASERS, DAMAGE
As spacecraft orbit the earth, they encounter a variety of particles and radiation. Charged particles are common enough that a spacecraft can collect substantial charges on its surfaces. If these charges are not bled off, they can accumulate until electrostatic discharges occur between a charged surface and some lower-potential location on the craft. Electrostatic discharge (ESD) is the suspected culprit in a number of spacecraft failures. Silverized Teflon film has become the standard... Topics: PHOTONS, POLARIZATION (CHARGE SEPARATION), DIPOLES, ROTATION, ATOMS, TRAPPING
byShaw, T. L.; Corliss, J. M.; Gundo, D. P.; Mulenburg, G. M.; Breit, G. A.; Griffith, J. B
The high cost and long times required to develop research packages for space flight can often be offset by using ground test techniques. This paper describes a space shuttle launch and reentry simulating using the NASA Ames Research Center's 20G centrifuge facility. The combined G-forces and acoustic environment during shuttle launch and landing were simulated to evaluate the effect on a payload of laboratory rates. The launch G force and acoustic profiles are matched to actual shuttle launch... Topics: INEQUALITIES, PARADOXES, PHOTONS, QUANTUM MECHANICS, EXPERIMENTATION, INTERFERENCE, MEASUREMENT
The topics discussed include the following: telepresence, telerobotics, teleoperators, man machine systems, robot control, and remote control. Topics: DOWN-CONVERTERS, IDENTIFYING, INTERFEROMETERS, PHOTONS, TIME DEPENDENCE, CAVITIES, IDLERS, SELECTION
In the microgravity environment, the effect of gravity on fluid motion is much reduced. Hence, secondary effects such as vibrations, jitters, surface tension, capillary effects, and electromagnetic forces become the dominant mechanism of fluid convection. Numerous studies have been conducted to investigate fluid behavior in microgravity with the ultimate goal of developing processes with minimal influence from convection. Industrial applications such as crystal growth from solidification of... Topics: HAMILTONIAN FUNCTIONS, RADIATION DISTRIBUTION, RAMAN SPECTRA, DEGENERATION, PHOTONS
The hydrostatic bearing promises life and speed characteristics currently unachievable with rolling element bearings alone. In order to achieve the speed and life requirements of the next generation of rocket engines, turbopump manufacturers are proposing hydrostatic bearings to be used in place of, or in series with, rolling element bearings. The design of a hydrostatic bearing is dependent on accurate pressure in the bearing. The stiffness and damping of the hydrostatic bearing is very... Topics: COMPRESSING, COUNTING, DEFORMATION, LASERS, PHOTONS, SELECTION, COMMUTATION, HAMILTONIAN FUNCTIONS
THE WORLD WILL NOT END IN 2012 Carlos Barrios was born into a Spanish family on El Altiplano, the highlands of . His home was in Huehue tenango, also the dwelling place of the Maya Mam tribe. With other Maya and other indigenous tradition keepers, the Mam carry part of the old ways on Turtle Island ( North America ). They are keepers of time, authorities on remarkable calendars that are ancient, elegant and relevant. Mr. Barrios is a historian, an anthropologist and investigator. After studying... Topics: Barrios, mayan, 2012, 2013, prophecy, ascension, photons, prana, church
byMENARD, H. A.; MYHAL, D.; CAMERLAIN, M.; LUSSIER, A
EXPERIENCE WITH A SCREENING METHOD FOR ANTINUCLEAR ANTIBODIES WHICH USES INDIRECT IMMUNOFLUORESCENCE ON FORMALINIZED CHICKEN RED CELLS NUCLEI AS SUBSTRATE IS DISCUSSED. THE METHOD IS INEXPENSIVE, EASY TO STANDARDIZE, EASY TO PERFORM, AND PRESENTS A SENSITIVITY AND SPECIFICITY COMPARABLE TO CLASSICAL METHODS. SERA AND SYNOVIAL FLUIDS FROM PATIENTS WITH RHEUMATIC DISEASES WERE SCREENED. A DISCUSSION OF THE TECHNICAL ASPECTS AND THE CLINICAL APPLICATIONS IS INCLUDED. Topics: ANNIHILATION REACTIONS, OSO-7, COSMIC RAYS, GAMMA RAYS, PHOTONS, POSITRONS
Robots involved in high value manipulation must be effectively coupled to a human operator either at the work-site or remotely connected via communication links. In order to make use of experimental performance evaluation data, models must be developed. Powerful models of remote manipulation by humans can be used to predict manipulation performance in future systems based on today's laboratory systems. In this paradigm, the models are developed from experimental data, and then used to predict... Topics: AMPLIFICATION, COHERENT LIGHT, OSCILLATORS, PHOTONS, BEAM SPLITTERS, WIGNER COEFFICIENT
The purpose of this lab is to study some properties of light photons, to learn how logarithms can be used to find a power law relationship, and to use this technique to derive the Wien Displacement Law and Stefan-Boltzmann Law. The Temperature of the Surface of the Sun will be estimated using the Wien Displacement Law. Using the Wien Displacement Law it is possible to provide a simple derivation of the Planck Expression. Topics: Light Photons, Wien Displacement Law, Stefan Boltzmann Law, Planck's Constant, spectrum of the sun
The maximal distance of hole teleportation and quantum teleportation is limited by cosmological expansion and cannot exceed the Hubble's radius (c/H0) ~ 13 billions of light years. Entanglement depends on the distance, there is ultimate, fundamental and insuperable distance for teleportation as Hubble sphere. Besides quantum teleportation is limited by anthropic barrier 1 - 100 parsec. - The radius of quantum and hole teleportation depends on speed of movement, the more speed, the more the... Topics: Green zone, Hubble sphere, acceleration, uniform rectilinear motion, cosmological expansion,...
In this paper, coset codes are considered as terminated convolutional codes. Based on this approach, three new general results are presented. First, it is shown that the iterative squaring construction can equivalently be defined from a convolutional code whose trellis terminates. This convolutional code determines a simple encoder for the coset code considered, and the state and branch labelings of the associated trellis diagram become straightforward. Also, from the generator matrix of the... Topics: GAMMA RAY BURSTS, COSMOLOGY, GAMMA RAY OBSERVATORY, PHOTONS, ASTRONOMICAL MODELS, HOMOGENEITY,...
byRevercomb, H. E.; Sromovsky, L. A.; Suomi, V. E.; Boese, R. W
The four entry probes of the Pioneer Venus mission measured the radiative net flux in the atmosphere of Venus at latitudes of 60 deg. N, 31 deg. S, 27 deg. S, and 4 deg. N. The three higher latitude probes carried instruments (small probe net flux radiometers; SNFR) with external sensors. The measured SNFR net fluxes are too large below the clouds, but an error source and correction scheme have been found (H. E. Revercomb, L. A. Sromovsky, and V. E. Suomi, 1982, Icarus 52, 279-300). The... Topics: SOLAR FLARES, IMAGING TECHNIQUES, ASTROPHYSICS, PHOTONS, GAMMA RAYS, COLLIMATORS, ALBEDO,...
Main-group pallasites (PMG) are mixtures of iron-nickel metal and magnesian olivine thought to have been formed at the core-mantle boundary of an asteroid . Some have anomalous metal compositions (PMG-am) and a few have atypically ferroan olivines (PMG-as) . PMG metal is consistent with an origin as a late fractionate of the IIIAB iron core . Most PMG olivines have very similar Fe/Mg ratios, likely due to subsolidus redox reaction with the metal . In contrast, minor and trace... Topics: SOLAR ELECTRIC PROPULSION, FABRICATION, SOLAR SAILS, TETHERLINES, AEROCAPTURE, CHEMICAL PROPULSION,...
bySrivastava, Ashok, N.; Akella, Ram; Diev, Vesselin; Kumaresan, Sakthi Preethi; McIntosh, Dawn M.; Pontikakis, Emmanuel D.; Xu, Zuobing; Zhang, Y
This paper describes the results of a significant research and development effort conducted at NASA Ames Research Center to develop new text mining techniques to discover anomalies in free-text reports regarding system health and safety of two aerospace systems. We discuss two problems of significant importance in the aviation industry. The first problem is that of automatic anomaly discovery about an aerospace system through the analysis of tens of thousands of free-text problem reports that... Topics: GAMMA RAY BURSTS, TIME DEPENDENCE, FREQUENCIES, SIGNATURES, PHOTONS, PROTONS, ELECTRONS, TRENDS,...
Wind-tunnel testing of a hypersonic inlet with rectangular-to-elliptical shape transition has been conducted at Mach 4.0. These tests were performed to investigate the starting and back-pressure limits of this fixed-geometry inlet at conditions well below the Mach 5.7 design point. Results showed that the inlet required side spillage holes in order to self-start at Mach 4.0. Once started, the inlet generated a compression ratio of 12.6, captured almost 80% of available air and withstood a... Topics: X RAY SPECTROSCOPY, GALACTIC CLUSTERS, LYMAN ALPHA RADIATION, CAMERAS, X RAY SPECTRA, RADII, PHOTONS
without sense , just hight colors & hot toast , see also the First , same video but abstract ambient sound without "drum" ... Bon Apetit and let's your eyes become square °.~)) Topics: hight voltage, colours, photons, frequency, experimental, optical, music, noise, industrial, light,...
Many devices eject a mass of fluid either in one shot or periodically. Examples include heart valves and flapping wings. Often the goal is to maximize the volume of fluid moving as a coherent vortex ring away from the exit. M. Gharib (California Institute of Technology) used a piston to experimentally study fluid ejected from a pipe and found that the largest coherent mass of fluid was attained at a piston stroke (normalized by diameter) of 4 under a variety of circumstances, including... Topics: FLOW CHARACTERISTICS, SPECTROSCOPY, LASER INDUCED FLUORESCENCE, ENTHALPY, LINE SPECTRA, SPECTRAL...
A high-effectiveness liquid droplet/gas heat exchanger (LDHX) concept for thermal management in space is described. Heat is transferred by direct contact between fine droplets (approx. 100 to 300 micron diameter) of a suitable low vapor pressure liquid and an inert working gas. Complete separation of the droplet and gas media in the zero-g environment is accomplished by configuring the LDHX as a vortex chamber. The large heat transfer area presented by the small droplets permits heat exchanger... Topics: GAMMA RAY BURSTS, SPECTRAL SIGNATURES, TEMPORAL DISTRIBUTION, DATA REDUCTION, MONTE CARLO METHOD,...
Long-term drift of noble and refractory metal thermocouples at 1600 K in air, argon, and vacuum Topics: BREMSSTRAHLUNG, COMPTON EFFECT, GAMMA RAYS, COSMOLOGY, ELECTRONS, INTERSTELLAR SPACE, PHOTONS,...
The Structural Biology laboratory at NASA Marshall Spaceflight Center uses x-ray crystallographic techniques to conduct research into the three-dimensional structure of a wide variety of proteins. A major effort in the laboratory involves an ongoing study of human serum albumin (the principal protein in human plasma) and its interaction with various endogenous substances and pharmaceutical agents. Another focus is on antigenic and functional proteins from several pathogenic organisms including... Topics: QUANTUM THEORY, PROBABILITY THEORY, PHOTONS, PARTICLE THEORY, BEAM SPLITTERS, WAVE FUNCTIONS,...
The mobility of electrons in laser radiated DNA is closed to the energy transfer and energy migration of a biological molecule. Arrhenius has studied the conductivity of the electrons in a biological molecule. But his result is far from the experimental result and meanwhile the relation between some parameters in his theory and the micro-quantities in DNA is not very clear. In this paper, we propose a new phonon model of electron mobility in DNA and use Lippman-Schwinger equation and S-matrix... Topics: DOWN-CONVERTERS, QUANTUM MECHANICS, QUANTUM OPTICS, PHOTONS, PHASE MATCHING, FORMALISM, CRYSTAL...
The composite materials have been used in aerospace industries for quite some time. Several non-destructive evaluation (NDE) methods have been developed to inspect composites in order to detect flaws, matrix cracking, and delamination. These methods include ultrasonics, acoustic emission, shearography, thermography, X-ray, and digital image correlation. The NDE Branch of Marshall Space Flight Center has recently acquired a thermal imaging NDE system. The same system has been used at NASA... Topics: CRYPTOGRAPHY, OPTICAL FIBERS, QUANTUM MECHANICS, QUANTUM THEORY, SECURITY, SCRAMBLING...
A method of scaling is described that easily converts the aeroelastic equations of motion of a full-sized aircraft into ones of a wind-tunnel model. To implement the method, a set of rules is provided for the conversion process involving matrix operations with scale factors. In addition, a technique for analytically incorporating a spring mounting system into the aeroelastic equations is also presented. As an example problem, a finite element model of a full-sized aircraft is introduced from... Topics: RAYLEIGH SCATTERING, DENSITY MEASUREMENT, CONTINUOUS WAVE LASERS, LIGHT SCATTERING, TEST...
byHarper, David B.; Cook, Anthony; Hostetler, Chris; Hair, John W.; Mack, Terry L
NASA Langley Research Center (LaRC) recently developed the LaRC Airborne High Spectral Resolution Lidar (HSRL) to make measurements of aerosol and cloud distribution and optical properties. The Airborne HSRL has undergone as series of test flights and was successfully deployed on the Megacity Initiative: Local and Global Research Observations (MILAGRO) field mission in March 2006 (see Hair et al. in these proceedings). This paper provides an overview of the design of the Airborne HSRL and... Topics: PLASMAS (PHYSICS), SURVEYS, ELECTROMAGNETIC RADIATION, PHOTONS, SEMICONDUCTORS (MATERIALS), SURFACE...
Automatic power supply circuit design for driving inductive loads and minimizing power consumption including solenoid example Topics: GALACTIC RADIATION, GAMMA RAYS, MILKY WAY GALAXY, BREMSSTRAHLUNG, COMPTON EFFECT, PHOTONS,...
The extractability of ammonia halides (including ammonium thiocyanate) formed as byproducts from the synthesis of Si(NH)2 via ammonolysis of the corresponding silicon tetrahalides using supercritical NH3 as the extraction medium was investigated. It was found that the NH4SCN byproduct of ammonolysis of Si(SCN)4 can be almost completely extracted from the insoluble Si(NH)2 forming a promising system for the synthesis of pure Si(NH)2, one of the best precursors for Si3N4. In addition it was found... Topics: ADIABATIC DEMAGNETIZATION COOLING, SELECTION, SENSITIVITY, TELESCOPES, BOLOMETERS, REFRIGERATING,...